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00017 #include <stdlib.h>
00018 #include "common.h"
00019
00020 static gboolean
00021 udpwatcher (GIOChannel *src, GIOCondition cond, xmms_visualization_t *vis)
00022 {
00023 struct sockaddr_storage from;
00024 socklen_t sl = sizeof (from);
00025 xmmsc_vis_udp_timing_t packet_d;
00026 char* packet = packet_init_timing (&packet_d);
00027 if ((recvfrom (vis->socket, packet, packet_d.size, 0, (struct sockaddr *)&from, &sl)) > 0) {
00028 if (*packet_d.__unaligned_type == 'H') {
00029 xmms_vis_client_t *c;
00030 int32_t id;
00031
00032 XMMSC_VIS_UNALIGNED_READ (id, packet_d.__unaligned_id, int32_t);
00033 id = ntohl (id);
00034
00035
00036
00037
00038
00039
00040
00041 g_mutex_lock (vis->clientlock);
00042 c = get_client (id);
00043 if (!c || c->type != VIS_UDP) {
00044 g_mutex_unlock (vis->clientlock);
00045 return TRUE;
00046 }
00047
00048 memcpy (&c->transport.udp.addr, &from, sizeof (from));
00049 c->transport.udp.socket[0] = 1;
00050 c->transport.udp.grace = 2000;
00051 g_mutex_unlock (vis->clientlock);
00052 } else if (*packet_d.__unaligned_type == 'T') {
00053 struct timeval time;
00054 xmms_vis_client_t *c;
00055 int32_t id;
00056
00057 XMMSC_VIS_UNALIGNED_READ (id, packet_d.__unaligned_id, int32_t);
00058 id = ntohl (id);
00059
00060 g_mutex_lock (vis->clientlock);
00061 c = get_client (id);
00062 if (!c || c->type != VIS_UDP) {
00063 g_mutex_unlock (vis->clientlock);
00064 free (packet);
00065 return TRUE;
00066 }
00067 c->transport.udp.grace = 2000;
00068 g_mutex_unlock (vis->clientlock);
00069
00070
00071 gettimeofday (&time, NULL);
00072
00073 struct timeval cts, sts;
00074
00075 XMMSC_VIS_UNALIGNED_READ (cts.tv_sec, &packet_d.__unaligned_clientstamp[0], int32_t);
00076 XMMSC_VIS_UNALIGNED_READ (cts.tv_usec, &packet_d.__unaligned_clientstamp[1], int32_t);
00077 cts.tv_sec = ntohl (cts.tv_sec);
00078 cts.tv_usec = ntohl (cts.tv_usec);
00079
00080 sts.tv_sec = time.tv_sec - cts.tv_sec;
00081 sts.tv_usec = time.tv_usec - cts.tv_usec;
00082 if (sts.tv_usec < 0) {
00083 sts.tv_sec--;
00084 sts.tv_usec += 1000000;
00085 }
00086
00087 XMMSC_VIS_UNALIGNED_WRITE (&packet_d.__unaligned_serverstamp[0],
00088 (int32_t)htonl (sts.tv_sec), int32_t);
00089 XMMSC_VIS_UNALIGNED_WRITE (&packet_d.__unaligned_serverstamp[1],
00090 (int32_t)htonl (sts.tv_usec), int32_t);
00091
00092 sendto (vis->socket, packet, packet_d.size, 0, (struct sockaddr *)&from, sl);
00093
00094
00095
00096
00097 } else {
00098 xmms_log_error ("Received invalid UDP package!");
00099 }
00100 }
00101 free (packet);
00102 return TRUE;
00103 }
00104
00105 int32_t
00106 init_udp (xmms_visualization_t *vis, int32_t id, xmms_error_t *err)
00107 {
00108
00109 int32_t port = XMMS_DEFAULT_TCP_PORT;
00110 xmms_vis_client_t *c;
00111
00112
00113 if (!xmms_socket_valid (vis->socket)) {
00114 struct addrinfo hints;
00115 struct addrinfo *result, *rp;
00116 int s;
00117
00118 memset (&hints, 0, sizeof (hints));
00119 hints.ai_family = AF_UNSPEC;
00120 hints.ai_socktype = SOCK_DGRAM;
00121 hints.ai_flags = AI_PASSIVE;
00122 hints.ai_protocol = 0;
00123
00124 if ((s = getaddrinfo (NULL, G_STRINGIFY (XMMS_DEFAULT_TCP_PORT), &hints, &result)) != 0)
00125 {
00126 xmms_log_error ("Could not setup socket! getaddrinfo: %s", gai_strerror (s));
00127 xmms_error_set (err, XMMS_ERROR_NO_SAUSAGE, "Could not setup socket!");
00128 return -1;
00129 }
00130
00131 for (rp = result; rp != NULL; rp = rp->ai_next) {
00132 vis->socket = socket (rp->ai_family, rp->ai_socktype, rp->ai_protocol);
00133 if (!xmms_socket_valid (vis->socket)) {
00134 continue;
00135 }
00136 if (bind (vis->socket, rp->ai_addr, rp->ai_addrlen) != -1) {
00137 break;
00138 } else {
00139 close (vis->socket);
00140 }
00141 }
00142 if (rp == NULL) {
00143 xmms_log_error ("Could not bind socket!");
00144 xmms_error_set (err, XMMS_ERROR_NO_SAUSAGE, "Could not bind socket!");
00145 freeaddrinfo (result);
00146 return -1;
00147 }
00148 freeaddrinfo (result);
00149
00150
00151
00152
00153
00154 vis->socketio = g_io_channel_unix_new (vis->socket);
00155
00156 g_io_channel_set_encoding (vis->socketio, NULL, NULL);
00157 g_io_channel_set_buffered (vis->socketio, FALSE);
00158 g_io_add_watch (vis->socketio, G_IO_IN, (GIOFunc) udpwatcher, vis);
00159 }
00160
00161
00162 x_fetch_client (id);
00163 c->type = VIS_UDP;
00164 memset (&c->transport.udp.addr, 0, sizeof (c->transport.udp.addr));
00165 c->transport.udp.socket[0] = 0;
00166 x_release_client ();
00167
00168 xmms_log_info ("Visualization client %d initialised using UDP", id);
00169 return port;
00170 }
00171
00172 void
00173 cleanup_udp (xmmsc_vis_udp_t *t, xmms_socket_t socket)
00174 {
00175 socklen_t sl = sizeof (t->addr);
00176 char packet = 'K';
00177 sendto (socket, &packet, 1, 0, (struct sockaddr *)&t->addr, sl);
00178 }
00179
00180 gboolean
00181 write_udp (xmmsc_vis_udp_t *t, xmms_vis_client_t *c, int32_t id, struct timeval *time, int channels, int size, short *buf, int socket)
00182 {
00183 xmmsc_vis_udp_data_t packet_d;
00184 xmmsc_vischunk_t *__unaligned_dest;
00185 short res;
00186 int offset;
00187 char* packet;
00188
00189
00190 if (t->grace == 0) {
00191 delete_client (id);
00192 return FALSE;
00193 }
00194 if (t->socket == 0) {
00195 return FALSE;
00196 }
00197
00198 packet = packet_init_data (&packet_d);
00199 t->grace--;
00200 XMMSC_VIS_UNALIGNED_WRITE (packet_d.__unaligned_grace, htons (t->grace), uint16_t);
00201 __unaligned_dest = packet_d.__unaligned_data;
00202
00203 XMMSC_VIS_UNALIGNED_WRITE (&__unaligned_dest->timestamp[0],
00204 (int32_t)htonl (time->tv_sec), int32_t);
00205 XMMSC_VIS_UNALIGNED_WRITE (&__unaligned_dest->timestamp[1],
00206 (int32_t)htonl (time->tv_usec), int32_t);
00207
00208
00209 XMMSC_VIS_UNALIGNED_WRITE (&__unaligned_dest->format, (uint16_t)htons (c->format), uint16_t);
00210 res = fill_buffer (__unaligned_dest->data, &c->prop, channels, size, buf);
00211 XMMSC_VIS_UNALIGNED_WRITE (&__unaligned_dest->size, (uint16_t)htons (res), uint16_t);
00212
00213 offset = ((char*)&__unaligned_dest->data - (char*)__unaligned_dest);
00214
00215 sendto (socket, packet, XMMS_VISPACKET_UDP_OFFSET + offset + res * sizeof (int16_t), 0, (struct sockaddr *)&t->addr, sizeof (t->addr));
00216 free (packet);
00217
00218
00219 return TRUE;
00220 }